Difference between revisions of "ECLair"

From Hackstrich
(Categorizing.)
(I like an 8-bit data width better, I think.)
Line 7: Line 7:
 
* MECL-based
 
* MECL-based
 
* 25MHz main clock
 
* 25MHz main clock
* 16-bit data width
+
* 8-bit data width
 
* 24-bit physical address, 16-bit virtual address
 
* 24-bit physical address, 16-bit virtual address
 
* DMA support (at least for front panel, maybe one other DMA channel?)
 
* DMA support (at least for front panel, maybe one other DMA channel?)

Revision as of 16:19, 25 November 2012

ECLair is a long-term project to build an ECL minicomputer.

Project Status

  • 2012-11-24: Basic ideas/architecture starting to get put together.

Architecture Overview

  • MECL-based
  • 25MHz main clock
  • 8-bit data width
  • 24-bit physical address, 16-bit virtual address
  • DMA support (at least for front panel, maybe one other DMA channel?)
  • Microcoded, running control store in SRAM for speed
    • Unless I can find equally-fast EPROMs
    • Copied to SRAM from EPROM before the system starts